PMID: 9192271Jun 1, 1997Paper

Metachromatic leucodystrophy in three families from Nova Scotia, Canada: a recurring mutation in the arylsulphatase A gene

Journal of Medical Genetics
M B Coulter-MackieM D Ludman

Abstract

Metachromatic leucodystrophy (MLD) is a lysosomal storage disease resulting from a deficiency of arylsulphatase A. We have identified a child with infantile onset MLD who is homozygous for an A212V mutation, a mutation previously reported but not further characterised. We have introduced this mutation into an arylsulphatase A expression vector by site directed mutagenesis. Transient expression of this mutant plasmid in COS cells yields very low levels of arylsulphatase A activity consistent with the patient's phenotype. The arylsulphatase A pseudodeficiency also segregates in this family causing difficulty in interpreting enzyme levels in the absence of DNA data. Two other patients from the same province, also carrying the A212V allele, have juvenile and adult onset MLD and are heterozygous for P426L ("A" allele) and I179S alleles respectively, known late onset alleles.

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Citations

Oct 6, 2000·Pediatric Neurology·L T ArbourM B Coulter-Mackie
Oct 16, 2015·Human Mutation·Martina CesaniAlessandra Biffi
Dec 28, 2002·American Journal of Medical Genetics. Part a·Ana MarcãoVolkmar Gieselmann
Aug 15, 2019·Experimental and Therapeutic Medicine·Yangyang WangYiwei Liu
Sep 5, 1998·Journal of Inherited Metabolic Disease·V GieselmannG Nagels

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